Polyester resin and method for preparing the same
a polymer resin and polymer technology, applied in the field of polymer resins, can solve the problems of difficult to enhance the heat resistance of bisphenol-a through stretching or crystallization process, limitations on application and enhancement of heat resistance, etc., and achieve the effect of superior heat resistance and impact strength
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Preparation of Polyester Resin
[0025]Except for using the amounts of TPA, IPA, ISB, and EG according to Table 1, polyester resin was prepared by the same manner described in Comparative Example 1. Intrinsic viscosity, heat-resistance (Tg) and izod impact strength of the polyester resin were measured, and represented in Table 1.
TABLE 1ExamplesComparative Examples12345612345TPA(%)1001009010010010010010010090100IPA(%)1010ISB(%)9381920401841039200CHDM(%)912242585521000060EG(%)04039225619690618040IV(dl / g)0.660.590.630.690.550.700.740.650.580.630.75Heat-resistance92123104107130102859312410485(Tg, ° C.)Impact9068129N.B3029138373032N.Bstrength(J / m)
[0026]In Example 4 and Comparative Example 5, impact strength could not be measured because any break did not occur (No-Break: N.B) due to high mechanical strength. As shown in Table 1, to compare a conventional polyester resin, the polyester resin according to the present invention has much superior impact strength though it has same or higher hea...
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